JPS6112976A - Modification of synthetic fiber - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed description of the invention (Industrial field of application)
WJ is a modification method for composite IFCIIH that simultaneously satisfies R properties.
do.

(Prior art) IRIl has excellent chemical and physical properties, but since it is a hydrophobic fiber, it causes static electricity to cling to the body, makes unpleasant static noises when putting on and taking off clothes, and causes sweat. It has drawbacks such as difficulty in absorbing water and darkening due to recontamination after washing, and its applications are currently limited.

In recent years, there has been an increasing demand for synthetic Im fibers with multiple properties, and as seen in Japanese Patent Publication No. 51-2559, synthetic Im fibers are produced by treating them with hydrophilic compounds such as polymerizable polyglycol compounds.
There is a method of imparting hydrophilic properties by forming a film made of the compound on the surface of fibers, but this method does not produce characteristics such as squeaking or silkiness. For example, when a film of a polyglycol compound is formed, it causes a large change in texture, and at the same time, the IIN/fiber and fabric/fabric become slippery, causing a change in the fabric structure called mesh slippage, which is a characteristic for clothing. Problems that impair the quality of the material are likely to occur, and characteristics such as squeaking and silkiness cannot be obtained.

(Problems to be Solved by the Invention) The present invention has the characteristic performance of giving a squeaky and silky sound, and satisfies water absorption, antistatic, and SR properties at the same time. The present invention provides synthetic fibers that are retained with good durability.

(Means for solving the problem) Synthesis characterized by polymerizing a polyoxyethylene glycol compound having two or more polymerizable vinyl groups in the molecule containing inorganic fine particles to form a film on the fiber surface. Method for modifying fibers.

The method for applying the polyoxyethylene glycol compound containing inorganic fine particles of the present invention to 1liI11 is as follows:
Examples include the dipping method, pad dry cure method, pad steam method, spray method, and textile printing method, but the pad steam method has the advantage of being easier to coat III rough surfaces efficiently and in terms of productivity. Force 1 is preferable. That is, after immersing a fabric in a treatment bath containing a polyoxyethylene glycol compound having a polymerizable vinyl group and inorganic fine particles, and adding a polymerization initiator as necessary, the fabric is squeezed with a mangle or the like, and the 80 to 140 The polymerization reaction is initiated by heating in steam at a temperature of 0.degree. C., and after the polymerization is completed, the material is washed with water and dried.

In the present invention, the polyoxyethylene glycol compound having two or more polymerizable vinyl groups in the molecule is a hydrophilic compound having an oxyethylene glycol unit as a main constituent unit, such as polyethylene glycol diacrylate, polyethylene Glycol polypropylene glycol dimethacrylate polyethylene glycol ω-
(α,′α-dimethacrylokydimethyl)acetate ω′
Acrylate and the following items will be released early.

(However, R1 and R2 are hydrogen or methyl groups, a-5 to 50
It is 0. ) General formula (wherein R1 to R3 are H or an alkyl group having 1 to 2 carbon atoms.

x, y, z are 0 or integers from 1 to 20, and x+y+2 is from 3 to
One of the 20° alkylene ether moieties must be ethylene oxide, and the number of moles thereof is (x +
y + z) is 72 or more.

A represents a type of group selected from 10-1-NH-1-CH2-1-8O2-1Hs or does not exist (benzene nuclei are directly bonded to each other). Inorganic fine particles as used in the present invention are: These include aluminum oxide, silicon oxide, kaolinite, talc, calcium carbonate, calcium silicate, magnesium oxide, titanium oxide, etc., and particles with a particle size of 3 to 1001 μm are preferably dispersed in water in advance. If a material having a low refractive index, such as silicon oxide, is used among the inorganic fine particles, the effect of deepening the color of the treated fabric can be imparted at the same time.

The inorganic fine particles can be used alone or in a mixture of two or more. The amount used varies depending on the type and particle size of the inorganic fine particles, but is 0.05 per 1 hydrophilic compound used.
Above, preferably 0.1 to 0.3. The amount used can be determined as appropriate depending on the texture of the fabric to be treated, but the particle size and modification effect are more pronounced when the particle size is smaller when the same weight is mixed with the hydrophilic compound. . In other words, this seems to be because the smaller the particle diameter, the larger the number of particles and the higher the distribution density. Furthermore, the squeaking effect is greater when the particle shape is non-circular than when it is circular.

Polymerization initiators used in the present invention include peroxides that can be used as vinyl polymerization initiators, such as ammonium persulfate, potassium persulfate, hydrogen peroxide, and benzoyl peroxide, and these peroxides and iron (II) ions. A redox initiator in combination with a reducing agent such as sulfite, hydroxylamine, and hydrazine is used, and by selecting the type of polymerization initiator, the treatment can be performed under desired treatment conditions.

In the present invention, the object of the present invention is generally achieved by applying the above-mentioned polyoxyethylene glycol compound and inorganic fine particles to the fiber surface. It is possible to stably achieve improved performance.

If the amount of this compound is too large, sliminess becomes strong, and squeaking and silkiness decrease. For example, if only the compound is used, it is necessary to control the amount of adhesion to 0.5% by weight or less in order to suppress slime, but this does not allow for water absorption, antistatic properties, and SR.
Sexuality is also not achieved.

In order to stably provide all of these performances, certain quantitative conditions must be satisfied. That is, the amount of the compound is suppressed to a range of 1 to 2% by weight based on the weight of the raw material, and the amount of the inorganic fine particles is 0.05 part or more, preferably 0.1 to 0.05 parts, based on 1 part of the compound. It is regulated within the scope of the third section.

The synthetic fiber of the present invention means common synthetic fibers such as polyester, polyamide, and polyacrylonitrile.

For example, polyester fibers are polymers produced by the condensation reaction of terephthalic acid and ethylene glycol or butylene glycol, sebacic acid,
Condensation polymers of adipic acid, trimellitic acid, isophthalic acid, paraoxybenzoic acid, etc. with ethylene glycol, butylene glycol, and other polyesters such as modified polyesters, especially polyesters dyeable with cationic dyes, etc. It means the fiber.

In addition, polyamide fibers include nylon 4. nylon 6
・6. Nylon 6/10. It refers to fibers made of nylon 12, modified nylons thereof, and blends and copolymers of these polyamide compounds and other polymers.

In addition, polyacrylonitrile fibers are mainly composed of acrylonitrile, and are copolymerized with methyl acrylate, methyl methacrylate, sodium styrene sulfonate, sodium allyl sulfonate, 2-
It refers to fibers copolymerized with one or more types of methyl-5-vinylpyridine, and fibers copolymerized or blended with vinylidene chloride for the purpose of flame retardancy.

Among synthetic fibers, polyester fibers, especially irregular cross-section yarns, and especially AT for high-grade clothing having a silk-like appearance.
Overall, the present invention is extremely effective.

In other words, such fibers imparted with the multi-performance as well as squeaky and silky characteristics as defined in the present invention become materials for clothing that are superior to natural silk in terms of strength and elongation.

Among these, the method of the present invention is particularly advantageous in the case of fibers with irregular cross-sections and grooves in the convex portions as shown in Fig. 1, since it does not impair the squeakiness or silkiness characteristic of the fibers. . Such lll1t is, for example, convex.

Place the easily eluting components in the parts, composite spin, and alkali.

It can be easily manufactured by subjecting it to a similar treatment.

In addition, synthetic Il# may be used alone or in combination, and may be in the form of thread or fabric, or in the form of staples, but among these forms, the fabric form is particularly effective. be done.

(Example) Example 1 A polyester yarn (manufactured by Toshiku Co., Ltd.) having a triangular cross section made of 50 denier 36 filaments and twisted at 250 T/M was used as a warp yarn, and a triangular cross section yarn (75 denier 36 filament) was used as a warp yarn. (manufactured by Toshiku Co., Ltd.) after temporary twisting 1
A satin crepe was woven using 200 T/M additional twist as the weft.

Next, it is embossed using a washer using a conventional method, and heated to 180°C.
I! heat-set at 30°C, alkali weight loss was performed in a 98°C aqueous solution containing 50g/ffi of caustic soda,
After neutralization and washing with water, final setting was carried out at a temperature of 160°C.

The alkali weight loss rate was 20%, and the fabric obtained had excellent silk-like fluff and drape properties.

The fabric was immersed in the treatment bath described below and then squeezed uniformly with a mangle to adjust the weight to 90% by weight. Next, it was treated in heated steam at 130°C for 5 minutes, and then washed (60°C).
After washing with water, it was dried and heat set at a temperature of 160°C.

In the treatment bath, the molecular weight of the polyoxyethylene segment is 1.
To an aqueous solution of 30 g/Q of polyethylene glycol dimethacrylate (000) and 3 g/ρ of ammonium persulfate as a polymerization initiator, silicon oxide having a particle size of 40 to 50 mμ was preliminarily dispersed in water at a concentration of 20% by weight. 10.20 sog/Q was added. As Comparative Example 1, a treatment bath not containing silicon oxide was used.As Comparative Example 2, the fabric treated in Comparative Example 1 was immersed in a treatment bath containing 20 g/Q of the silicon oxide aqueous dispersion of the present invention.
160℃ after squeezing with a mangle so that the adhesion is 0% by weight.
cured at a temperature of

To examine washing resistance, a portion of the treated fabric was washed 10 times at 40° C. for 5 minutes in a 2 g/Q aqueous solution of a neutral detergent (ZABU, manufactured by Kao Soap). Regarding treated fabric before and after washing,
As hydrophilic performance evaluation, resin adhesion rate, water absorption, antistatic property,
Static friction force was measured as the slime property, and pull-out resistance of the weft yarn of the fabric was measured as the slippage property, and the results of these measurements are shown in Table 1.

The dimensions for performance evaluation are as follows.

Resin adhesion rate: Determined from the weight change before and after treatment.

Water absorption: A water droplet of approximately 0.03 ml was dropped onto the treated cloth, and the time until it was completely absorbed was measured.

Antistatic property (frictional charging voltage): Frictional charging voltage (V) was measured in an atmosphere of 20° C. and 30% RH using a cotton cloth as a target cloth using a Kyoto University Kaken type 0-tally static tester.

Static friction crab [Textile and Industry J vol 31. to 10 (
A stick-slip curve was obtained by assembling a device similar to PI3 (1975), and the static friction force (9) was measured from the curve.

Weft resistance: Weft pull-out resistance (9) was determined based on the JIS L1096B method.

From Table 1, the product according to the present invention suppresses the slippage of the texture due to the decrease in static friction force and the quality deterioration due to the decrease in the resistance to shedding seen in Comparative Example 1 without impairing the performance of the hydrophilic compound, and is equivalent to the unprocessed product. It is clear that the texture and quality can be maintained.

Among the products according to the present invention, the one containing 20Q/Q silicon oxide had the texture closest to that of an unprocessed product. In addition, in Comparative Example 2, no washing was performed.
Although it is possible to obtain a texture similar to that of an unprocessed product, it is not durable against washing and is of little practical use.

Example 2 Copolymerization of easily soluble polymers consisting of polyethylene terephthalate (intrinsic viscosity 0.66, titanium oxide content 0.55%), polyethylene terephthalate (98 mol%) and 15-sodium sulfoisophthalate (2 mol%) A mixture of polyester (intrinsic viscosity 0.55 in orthochlorophenol at 25°C) in a weight ratio of 80/20, using the above polyethylene terephthalate as the poorly soluble polymer, spinning temperature 295°C, spinning speed 1200 cm/sin, easily soluble polymer. : A slightly soluble polymer was mixed with a ratio of 20:8, and a easily soluble polymer was supplied in a core-sheath shape to each tip of the Y-shaped discharge hole for composite spinning, followed by a drawing speed of 3001+1/Sin.
The yarn was drawn at a hot pin temperature of 120° C. and a draw ratio of 3.3 times to obtain a drawn yarn of 75 denier 36 filament having a triangular cross-sectional shape containing easily soluble polymer at three vertices. The length of the easily soluble polymer on the fiber surface was 160 μm, and the length between the point closest to the fiber center of gravity and the point farthest from the center of gravity of the easily soluble polymer was 2.5 μm. Note that the dissolution rate ratio of the easily soluble polymer to the slightly soluble polymer is 4 times that of the slightly soluble polymer under the dissolution treatment conditions described later.

Using this drawn yarn, the warp was twisted at 150T/M, and the weft was twisted at 900T/M in the S direction, then two yarns were pulled together and then twisted at 700T/M in 7 directions to create a piece. Using twisted thread, we wove komazu for Japanese clothing on a jacquard loom. After scouring the obtained fabric, it was heated to 180°C for an intermediate setting and heated to 100°C with a 30g/a caustic soda aqueous solution.
Inlet width 1.2μ depth 1.9 at the apex after alkali treatment at ℃
A triangular cross-section thread with μ grooves was formed.

Next, 0ianix 31ack BG-FS (disperse dye manufactured by Sanll Kasei Co., Ltd.) was added to a bath containing 14% owf at a bath ratio of 1.
After dyeing at 130° C. for 60 minutes in a 30% dye bath, reduction cleaning was performed according to a conventional method, followed by washing with water and drying.

This black dyed product was immersed in the following treatment bath, then squeezed uniformly with a mangle to adjust the amount to 80% by weight, then treated in saturated steam at 105°C for 3 minutes, washed (60°C), and washed with water. After that, it was heat set at 170° C. to obtain the 1N roughness shown in FIG.

Treatment bath of the present invention: Ammonium persulfate 29/a as a polymerization initiator is added to an aqueous solution of 25 g/Q of polyethylene glycol trimethacrylate whose polyoxyethylene segment has a molecular weight of 2000, and the particle size is 10 to 29. mμ
Add 25g/Q of silicon oxide uniformly dispersed in water at a concentration of 20% by weight.

Treatment bath of comparative example: one consisting only of the above polyethylene glycol trimethacrylate and ammonium persulfate.

Table 2 shows the results of hydrophilicity performance and texture and physical properties measured in the same manner as in Example 1.

Here, stick-slip is Shizuka 11! II The value obtained from the amplitude of the stick-slip curve during force measurement indicates the squeaky feel of the fabric, and a large value indicates a squeaky texture. In addition, the L value indicates the depth of color, and is measured with a digital colorimeter (manufactured by Suga Test Instruments Co., Ltd.).
The smaller the L value, the higher the visual density.

According to the present invention, it is possible to obtain a hydrophilized product with excellent durability that does not impair the characteristics of the high-grade silky material that has a squeaky feel, and it is also possible to obtain the effect of deepening the color of the dyed object at the same time. .

(Effects of the Invention) The present invention provides a synthetic fiber that satisfies water absorption, electric shock, and SR properties at the same time in addition to the characteristic performance of squeaking and silky sound, and also maintains these properties with good durability. It provides:

The synthetic fibers modified according to the present invention are suitable materials for drawing board clothing, especially for Japanese clothing.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing a cross section of a typical fiber according to the method of the present invention. In the figure 1: Fiber 2: Polyoxyethylene glycol compound coating layer 3: Inorganic fine particles Patent applicant Toshi Co., Ltd. Company No. 11

Claims (1)

[Claims] A method for modifying synthetic fibers, which comprises polymerizing a polyoxyethylene glycol compound having two or more polymerizable vinyl groups in a molecule containing inorganic fine particles to form a film on the fiber surface.